12011015501 has 2 divisors, whose sum is σ = 12011015502. Its totient is φ = 12011015500.

The previous prime is 12011015483. The next prime is 12011015537. The reversal of 12011015501 is 10551011021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11949769225 + 61246276 = 109315^2 + 7826^2 .

It is an emirp because it is prime and its reverse (10551011021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011015501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12011015501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011015561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005507750 + 6005507751.

It is an arithmetic number, because the mean of its divisors is an integer number (6005507751).

Almost surely, 2^12011015501 is an apocalyptic number.

It is an amenable number.

12011015501 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011015501 is an equidigital number, since it uses as much as digits as its factorization.

12011015501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50, while the sum is 17.

Adding to 12011015501 its reverse (10551011021), we get a palindrome (22562026522).

The spelling of 12011015501 in words is "twelve billion, eleven million, fifteen thousand, five hundred one".